<template>
  <Dropdown
    placement="bottom"
    :trigger="['click']"
    :dropMenuList="localeList"
    :selectedKeys="selectedKeys"
    @menu-event="handleMenuEvent"
    overlayClassName="app-locale-picker-overlay"
  >
    <span class="cursor-pointer flex items-center">
      <Icon icon="ion:language"/>
      <span v-if="showText" class="ml-1">{{ getLocaleText }}</span>
    </span>
  </Dropdown>
</template>
<script lang="ts" setup>
import type {LocaleType} from '/#/config';
import type {DropMenu} from '/@/components/Dropdown';
import {ref, watchEffect, unref, computed} from 'vue';
import {Dropdown} from '/@/components/Dropdown';
import Icon from '@/components/Icon/Icon.vue';
import {useLocale} from '/@/locales/useLocale';
import {localeList} from '/@/settings/localeSetting';

const props = defineProps({
  /**
   * Whether to display text
   */
  showText: {type: Boolean, default: true},
  /**
   * Whether to refresh the interface when changing
   */
  reload: {type: Boolean},
});

const selectedKeys = ref<string[]>([]);

const {changeLocale, getLocale} = useLocale();

const getLocaleText = computed(() => {
  const key = selectedKeys.value[0];
  if (!key) {
    return '';
  }
  return localeList.find((item) => item.event === key)?.text;
});

watchEffect(() => {
  selectedKeys.value = [unref(getLocale)];
});

async function toggleLocale(lang: LocaleType | string) {
  await changeLocale(lang as LocaleType);
  selectedKeys.value = [lang as string];
  props.reload && location.reload();
}

function handleMenuEvent(menu: DropMenu) {
  if (unref(getLocale) === menu.event) {
    return;
  }
  toggleLocale(menu.event as string);
}
</script>

<style lang="less">
.app-locale-picker-overlay {
  .ant-dropdown-menu-item {
    min-width: 160px;
  }
}
</style>
